34566-1903
2.54mm Pitch, MX123 Female Receptacle Housing, Keying Option G, Wire Dress Option 9, 80 Circuits, Blue TPA
Part Aliases: Molex 0345661903
The 34566-1903, a high-performance connector designed for power applications. Featuring a durable nylon housing and 80 contacts arranged in 4 rows, this connector ensures reliable connectivity in demanding environments. With a current rating of 25A and 11A, it is suitable for a wide range of power-critical systems. The MX123 connector type, with a pitch of 2.54mm, offers secure wire-to-board termination. Engineered for longevity, it operates efficiently in temperatures ranging from -40 to 125°C. Its polarized and keying features guarantee proper mating orientation, while the locking mechanism adds an extra layer of security. RoHS compliant and in stock for immediate shipping, the 34566-1903 is the perfect solution for your power connectivity needs.
| Product Category: | |
| Manufacturer: | Molex |
| Manufacturer Part Number: | Molex 34566-1903 |
| Color: | Blue |
| Series: | 34566 - MX123 |
| Amperage: | 11 A, 25 A |
| Connector Type: | MX123 |
| Gender: | Receptacle |
| Housing Material: | Nylon |
| Number of Contacts: | 80 |
| Number of Rows: | 4 |
| Pitch: | 2.54 mm |
| Material: | Nylon |
| Keying: | Yes |
| Operating Temperature Range: | -40 - 125 °C |
| Circuit Application: | Power |
| Polarized to Mate: | Yes |
| Connector System: | Wire to Board |
| Termination Pitch: | 2.54 mm |
| Glow Wire Capable: | No |
| Lock to Mating Part: | Yes |
| Stackable: | No |
| Part Aliases: | 0345661903 |
| Contact Detail: | 80 |
| SKU: | MOL34566-1903 |
Environmental Initiative Details
| Environmental Initiative: | RoHS |
|---|---|
| Compliant: | Unknown |
| Date of this Information: | Unknown |
| Notes: |
Product Change Notice
| Effective Date | Description of Change | Download |
|---|---|---|
| 09/30/2025 | 516520 - Equipment Transfer, Production Transfer or Rearrangement. Molex has created this PCN to group the complete Mx123 Large footprint series together for better control over implementation. Previously the part numbers were mentioned in the transfer PCN's 514557 & 514558 and due to strategy they were retracted (516511). The molds are transferred from Lincoln, USA. The assembly line is already in Guad 2. China will continue support the EU/Asia demand. | Download |
| 05/02/2025 | 516742 - Retraction of 513492. This retraction is to annunce that this PCN “513492” did not take place and Molex continues with the same compounder. | Download |
| 02/28/2025 | 516511 - Partial Retraction of PCN 514557 & 514558. in these PCNs communication on 11/2023 will maintain the small footprint series whic is already in production at guadalajara site 2 plant we will create a new pcn (516520) in which we will manage the MX123 large footprint series and its implementation plan. | Download |
| 09/02/2024 | 514558 - Equipment/Production Transfer or rearrangement. This notification is to inform you that will be move molds and Assy line transfer. This PCN will move from Chengdu, China to Guadalajara, Mexico (site 2) and it was made to provide the best delivery to locally production products. We are starting these transfers in later Q3 2024. No product changes will be made as part of this change. | Download |
| 07/21/2023 | 513492 - Change Supplier. This letter is to inform you that in order to re-balance global supply chains, Molex will qualify a new compounder location to be used by the existing resin supplier. | Download |
| 08/17/2022 | 512449 - Retraction of PCN 510937. retraction is due to the project not moving forward at this time, the compounding location for SPS/PA66 grade material will not be moving from the current sub-supplier. if it is deemed that this project will again move forward at a later date a new PCN will be created & sent to impacted customers. | Download |
| 07/29/2022 | 510937 - Change Supplier. in efforts to mitigate the supply risk of resin material our current supplier for SPS/PA66 grade of material will be transitioning to a new Sub-Supplier fir compounding. | Download |
| 10/06/2017 | 502808 - Equipment Transfer, Production Transfer or Rearrangement. This letter is to inform you that production of the part(s) identified in this notice are being moved to a different production or shipping location. No changes will be made to the product as a result of this move. | Download |
| 10/15/2015 | GCM 10685958 - New, Modified, Or Replacement Tooling. | Download |
| 10/01/2015 | GCM 10706555 - New, Modified, Or Replacement Tooling. | Download |
| 06/12/2015 | GCM 10685960 - New, Modified, Or Replacement Tooling. | Download |
| 05/11/2015 | GCM 10682374 - New, Modified, Or Replacement Tooling. | Download |
| 02/20/2015 | GCM 10664193 - New, Modified, Or Replacement Tooling. | Download |
| 08/11/2014 | GCM 10622037 - Product Component Change. | Download |